You were a mermaid/merman, and your kind was always being hunted down. You lost your mother to an attack. And ever since then, your father wouldn't allow you to go above the water's surface. But, you were quite the rule breaker.

You were sitting on a rock, flipping your tail in the shallow waves, when you heard voices from the beach. You immediately hid behind the rock. When you peeked out from behind it, you saw a handsome man.